Home / 11,261.52-15,531.46-8,240.40

Finding the Fourth Proportional to 11,261.52, 15,531.46 and 8,240.40

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Solution

The fourth proportional to 11,261.52, 15,531.46 and 8,240.40 is: 11,364.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,261.52 : 15,531.46 = 8,240.40 : x
  2. Step 2: Convert to fraction form
    11,261.52/15,531.46 = 8,240.40/x
  3. Step 3: Cross multiply
    11,261.52x = 15,531.46 × 8,240.40
  4. Step 4: Simplify right side
    11,261.52x = 127,985,442.98
  5. Step 5: Solve for x
    x = 127,985,442.98/11,261.52
  6. Step 6: Final answer
    x = 11,364.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.